Remove certificate from AWS and cleanup after cert revoke
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sayali
parent
c765eab2f0
commit
1207de8925
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@ -21,6 +21,7 @@ from lemur.certificates.schemas import CertificateOutputSchema, CertificateInput
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from lemur.common.utils import generate_private_key, truthiness
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from lemur.destinations.models import Destination
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from lemur.domains.models import Domain
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from lemur.endpoints import service as endpoint_service
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from lemur.extensions import metrics, sentry, signals
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from lemur.models import certificate_associations
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from lemur.notifications.models import Notification
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@ -797,3 +798,61 @@ def reissue_certificate(certificate, replace=None, user=None):
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new_cert = create(**primitives)
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return new_cert
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def is_attached_to_endpoint(certificate_name, endpoint_name):
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"""
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Find if given certificate is attached to the endpoint. Both, certificate and endpoint, are identified by name.
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This method talks to elb and finds the real time information.
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:param certificate_name:
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:param endpoint_name:
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:return: True if certificate is attached to the given endpoint, False otherwise
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"""
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endpoint = endpoint_service.get_by_name(endpoint_name)
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attached_certificates = endpoint.source.plugin.get_endpoint_certificate_names(endpoint)
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return certificate_name in attached_certificates
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def remove_from_destination(certificate, destination):
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"""
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Remove the certificate from given destination if clean() is implemented
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:param certificate:
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:param destination:
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:return:
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"""
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plugin = plugins.get(destination.plugin_name)
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if not hasattr(plugin, "clean"):
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info_text = f"Cannot clean certificate {certificate.name}, {destination.plugin_name} plugin does not implement 'clean()'"
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current_app.logger.warning(info_text)
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else:
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plugin.clean(certificate=certificate, options=destination.options)
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def cleanup_after_revoke(certificate):
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"""
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Perform the needed cleanup for a revoked certificate. This includes -
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1. Disabling notification
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2. Disabling auto-rotation
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3. Update certificate status to 'revoked'
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4. Remove from AWS
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:param certificate: Certificate object to modify and update in DB
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:return: None
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"""
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certificate.notify = False
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certificate.rotation = False
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certificate.status = 'revoked'
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error_message = ""
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for destination in list(certificate.destinations):
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try:
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remove_from_destination(certificate, destination)
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certificate.destinations.remove(destination)
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except Exception as e:
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# This cleanup is the best-effort since certificate is already revoked at this point.
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# We will capture the exception and move on to the next destination
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sentry.captureException()
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error_message = error_message + f"Failed to remove destination: {destination.label}. {str(e)}. "
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database.update(certificate)
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return error_message
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@ -19,6 +19,7 @@ from lemur.auth.permissions import AuthorityPermission, CertificatePermission
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from lemur.certificates import service
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from lemur.certificates.models import Certificate
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from lemur.extensions import sentry
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from lemur.plugins.base import plugins
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from lemur.certificates.schemas import (
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certificate_input_schema,
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@ -888,8 +889,24 @@ class Certificates(AuthenticatedResource):
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if cert.owner != data["owner"]:
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service.cleanup_owner_roles_notification(cert.owner, data)
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error_message = ""
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# if destination is removed, cleanup the certificate from AWS
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for destination in cert.destinations:
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if destination not in data["destinations"]:
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try:
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service.remove_from_destination(cert, destination)
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except Exception as e:
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sentry.captureException()
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# Add the removed destination back
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data["destinations"].append(destination)
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error_message = error_message + f"Failed to remove destination: {destination.label}. {str(e)}. "
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# go ahead with DB update
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cert = service.update(certificate_id, **data)
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log_service.create(g.current_user, "update_cert", certificate=cert)
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if error_message:
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return dict(message=f"Edit Successful except -\n\n {error_message}"), 400
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return cert
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@validate_schema(certificate_edit_input_schema, certificate_output_schema)
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@ -1429,10 +1446,12 @@ class CertificateRevoke(AuthenticatedResource):
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403,
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)
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if not cert.external_id:
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return dict(message="Cannot revoke certificate. No external id found."), 400
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# if not cert.external_id:
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# return dict(message="Cannot revoke certificate. No external id found."), 400
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if cert.endpoints:
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for endpoint in cert.endpoints:
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if service.is_attached_to_endpoint(cert.name, endpoint.name):
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return (
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dict(
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message="Cannot revoke certificate. Endpoints are deployed with the given certificate."
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@ -1442,7 +1461,13 @@ class CertificateRevoke(AuthenticatedResource):
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plugin = plugins.get(cert.authority.plugin_name)
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plugin.revoke_certificate(cert, data)
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log_service.create(g.current_user, "revoke_cert", certificate=cert)
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# Perform cleanup after revoke
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error_message = service.cleanup_after_revoke(cert)
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if error_message:
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return dict(message=f"Certificate (id:{cert.id}) is revoked - {error_message}"), 400
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return dict(id=cert.id)
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@ -149,6 +149,38 @@ def get_listener_arn_from_endpoint(endpoint_name, endpoint_port, **kwargs):
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raise
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@sts_client("elbv2")
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@retry(retry_on_exception=retry_throttled, wait_fixed=2000, stop_max_attempt_number=5)
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def get_load_balancer_arn_from_endpoint(endpoint_name, **kwargs):
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"""
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Get a load balancer ARN from an endpoint.
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:param endpoint_name:
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:return:
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"""
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try:
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client = kwargs.pop("client")
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elbs = client.describe_load_balancers(Names=[endpoint_name])
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for elb in elbs["LoadBalancers"]:
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return elb["LoadBalancerArn"]
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except Exception as e: # noqa
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metrics.send(
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"get_load_balancer_arn_from_endpoint",
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"counter",
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1,
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metric_tags={
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"error": str(e),
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"endpoint_name": endpoint_name,
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},
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)
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sentry.captureException(
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extra={
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"endpoint_name": str(endpoint_name),
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}
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)
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raise
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@sts_client("elb")
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@retry(retry_on_exception=retry_throttled, wait_fixed=2000, stop_max_attempt_number=20)
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def get_elbs(**kwargs):
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@ -300,6 +300,41 @@ class AWSSourcePlugin(SourcePlugin):
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)
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return None
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def get_endpoint_certificate_names(self, endpoint):
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options = endpoint.source.options
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account_number = self.get_option("accountNumber", options)
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region = get_region_from_dns(endpoint.dnsname)
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certificate_names = []
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if endpoint.type == "elb":
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elb_details = elb.get_elbs(account_number=account_number,
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region=region,
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LoadBalancerNames=[endpoint.name],)
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for lb_description in elb_details["LoadBalancerDescriptions"]:
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for listener_description in lb_description["ListenerDescriptions"]:
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listener = listener_description.get("Listener")
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if not listener.get("SSLCertificateId"):
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continue
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certificate_names.append(iam.get_name_from_arn(listener.get("SSLCertificateId")))
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elif endpoint.type == "elbv2":
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listeners = elb.describe_listeners_v2(
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account_number=account_number,
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region=region,
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LoadBalancerArn=elb.get_load_balancer_arn_from_endpoint(endpoint.name,
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account_number=account_number,
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region=region),
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)
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for listener in listeners["Listeners"]:
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if not listener.get("Certificates"):
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continue
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for certificate in listener["Certificates"]:
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certificate_names.append(iam.get_name_from_arn(certificate["CertificateArn"]))
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return certificate_names
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class AWSDestinationPlugin(DestinationPlugin):
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title = "AWS"
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@ -344,6 +379,10 @@ class AWSDestinationPlugin(DestinationPlugin):
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def deploy(self, elb_name, account, region, certificate):
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pass
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def clean(self, certificate, options, **kwargs):
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account_number = self.get_option("accountNumber", options)
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iam.delete_cert(certificate.name, account_number=account_number)
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class S3DestinationPlugin(ExportDestinationPlugin):
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title = "AWS-S3"
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@ -1,5 +1,5 @@
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import boto3
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from moto import mock_sts, mock_elb
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from moto import mock_sts, mock_ec2, mock_elb, mock_elbv2, mock_iam
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@mock_sts()
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@ -27,3 +27,107 @@ def test_get_all_elbs(app, aws_credentials):
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elbs = get_all_elbs(account_number="123456789012", region="us-east-1")
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assert elbs
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@mock_sts()
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@mock_ec2
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@mock_elbv2()
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@mock_iam
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def test_create_elb_with_https_listener_miscellaneous(app, aws_credentials):
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from lemur.plugins.lemur_aws import iam, elb
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endpoint_name = "example-lbv2"
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account_number = "123456789012"
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region_ue1 = "us-east-1"
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client = boto3.client("elbv2", region_name="us-east-1")
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ec2 = boto3.resource("ec2", region_name="us-east-1")
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# Create VPC
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vpc = ec2.create_vpc(CidrBlock="172.28.7.0/24")
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# Create LB (elbv2) in above VPC
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assert create_load_balancer(client, ec2, vpc.id, endpoint_name)
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# Create target group
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target_group_arn = create_target_group(client, vpc.id)
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assert target_group_arn
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# Test get_load_balancer_arn_from_endpoint
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lb_arn = elb.get_load_balancer_arn_from_endpoint(endpoint_name,
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account_number=account_number,
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region=region_ue1)
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assert lb_arn
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# Test describe_listeners_v2
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listeners = elb.describe_listeners_v2(account_number=account_number,
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region=region_ue1,
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LoadBalancerArn=lb_arn)
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assert listeners
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assert not listeners["Listeners"]
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# Upload cert
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response = iam.upload_cert("LemurTestCert", "testCert", "cert1", "cert2",
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account_number=account_number)
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assert response
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cert_arn = response["ServerCertificateMetadata"]["Arn"]
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assert cert_arn
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# Create https listener using above cert
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listeners = client.create_listener(
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LoadBalancerArn=lb_arn,
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Protocol="HTTPS",
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Port=443,
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Certificates=[{"CertificateArn": cert_arn}],
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DefaultActions=[{"Type": "forward", "TargetGroupArn": target_group_arn}],
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)
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assert listeners
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listener_arn = listeners["Listeners"][0]["ListenerArn"]
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assert listener_arn
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assert listeners["Listeners"]
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for listener in listeners["Listeners"]:
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if listener["Port"] == 443:
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assert listener["Certificates"]
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assert cert_arn == listener["Certificates"][0]["CertificateArn"]
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# Test get_listener_arn_from_endpoint
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assert listener_arn == elb.get_listener_arn_from_endpoint(
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endpoint_name,
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443,
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account_number=account_number,
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region=region_ue1,
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)
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@mock_sts()
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@mock_elb()
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def test_get_all_elbs_v2():
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from lemur.plugins.lemur_aws.elb import get_all_elbs_v2
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elbs = get_all_elbs_v2(account_number="123456789012",
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region="us-east-1")
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assert elbs
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def create_load_balancer(client, ec2, vpc_id, endpoint_name):
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subnet1 = ec2.create_subnet(
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VpcId=vpc_id,
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CidrBlock="172.28.7.192/26",
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AvailabilityZone="us-east-1a"
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)
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return client.create_load_balancer(
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Name=endpoint_name,
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Subnets=[
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subnet1.id,
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],
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)
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def create_target_group(client, vpc_id):
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response = client.create_target_group(
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Name="a-target",
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Protocol="HTTPS",
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Port=443,
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VpcId=vpc_id,
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)
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return response.get("TargetGroups")[0]["TargetGroupArn"]
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@ -26,9 +26,8 @@
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</div>
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</form>
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<div ng-if="certificate.endpoints.length">
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<p><strong>Certificate cannot be revoked, it is associated with the following endpoints. Disassociate this
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certificate
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before revoking.</strong></p>
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<p><strong>Certificate might be associated with the following endpoints. Disassociate this
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certificate before revoking or continue if you've already done so.</strong></p>
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<ul class="list-group">
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<li class="list-group-item" ng-repeat="endpoint in certificate.endpoints">
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<span class="pull-right"><label class="label label-default">{{ endpoint.type }}</label></span>
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